ROSCHEN GROUP
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Schramm Carousel Style Drill Pipe
Drill Pipe Schramm Style
Drill Pipe Schramm Style
DTH drill pipes play a significant role in all DTH drilling, regardless of application, rock type, hole depth or drill rig. The key features of a high quality DTH tube are durability, accuracy and manageability.
Description
Drill Pipe Schramm Style and Schramm T46 Sytle DTH Drill Pipes
DTH drill pipes transmit compressed air, so as to power the hammers to perform drilling works. ROSCHEN Drill DTH drill pipes are made of superior alloy and the both thread ends are friction welded to the seamless steel pipe. The high pressure air is delivered to DTH hammer by DTH drill pipe, simultaneously it transfers the rotation and press force to the DTH hammer.
| OD A | Wall B | Length L | Weight | ID Pin C | Across Flat D | Flat Length E | Dist From Shoulder F | Recess Length G | Recess Length H | Recess Dia. | Connection | P/N |
| 3 1/2" | 0.368 | 20' | 225 lbs | 1 3/4" | 3 1/4" | 2 3/4" | 3 3/4" | 6 5/8" | 5 1/2" | 2 3/4" | 2 3/8 | IF |
| 4 1/2" | .337" | 20' | 335 lbs | 1 3/4" | 3 7/8" | 2 1/4" | 3 3/4" | 6 1/2" | 5 3/4" | 3 1/2" | 3 1/2 | Reg |
| 4 1/2" | .337" | 20' | 315 lbs | 2 1/8" | 3 7/8" | 2 1/4" | 3 3/4" | 6 1/2" | 5 3/4" | 3 1/2" | 2 7/8 | IF |
| 4 1/2" | .337" | 25' | 415 lbs | 1 3/4" | 3 7/8" | 2 1/4" | 3 3/4" | 6 1/2" | 5 3/4" | 3 1/2" | 3 1/2 | Reg |
| 4 1/2" | .337" | 25' | 415 lbs | 2 1/8"" | 3 7/8" | 2 1/4" | 3 3/4" | 6 1/2" | 5 3/4" | 3 1/2" | 2 7/8 | IF |
Features
• Complete sizes for the option, suitable for different types of DTH drilling systems;
• The rods are made of cold-drawn steel with high manufacturing precision;
• Thread joint sturdily linked to the rod via friction welding;
• Nitriding process grants the thread joint good hardness, good wear quality and thus long lifespan.
Applications
Mining, quarrying, water well drilling, geothermal well drilling, foundation piling, etc.